<?php
class Post_tagsModel extends Model {

	protected function get_primary_key() {
		return $this->primary_key = 'post_id';
	}

	protected function get_table_fields() {
		return $this->table_field = array (
  0 => 'post_id',
  1 => 'tag_id',
  2 => 'sort_order',
);
	}
}